castlegarden lawnmover B&S 775is 161cc (not starting)

5 years old castlegarden Lawnmower ( not starting) Model - xs 55 BVE self propelled galvanised steel and cutting with of 53cm Engine- Briggs & Stratton 160cc 4 different cutting methods (Collecting, Mulching, Side discharge, Rear discharge) 5 cutting highs Starter - electric button Battery - 2batteries (1 week 1 new ) and charger About the problem- serviced every year, after taking the blade off and sharpening the lawnmo didn’t start. Being left on the side overnight maybe got flooded inside ? I don’t know.. got new spark but didn’t sort the problem… it turns but doesn’t fire .. got grass robot so this is for sale for someone who knows how to fix it … Sold as seen . Bridgetown area..